Update 18: Anti Swap

- fixed being able to double reloading sounds
- tweaked Military Gun sounds to duck hit sounds
- added "quit to desktop" button to main menu
- guns now hide while reloading or restocking
- fixed reloading issue with scroll mouses
- added "TP" for Team Points in all team modes
- choosing Teams or Predators now done on screen
- many other adjustments and optimizations